Biology Forums - Study Force

When does a plant pass from the juvenile to the mature stage of growth?
 
  What will be an ideal response?

Question 2

Explain how photoperiod can control flowering.
 
  What will be an ideal response?

Question 3

When organic amendments such as animal or green manures are added to soils, micronutrient availability generally is enhanced by the production of natural chelating agents.
 
  Indicate whether the statement is true or false

Question 4

Once a micronutrient ion is introduced into the soil as a chelate, it will remain in that form until taken up by a plant or a microorganism.
 
  Indicate whether the statement is true or false

Question 5

Where the available supply of iron and zinc is low, deficiency of these elements can often be overcome by larger than normal applications of phosphorus fertilizer.
 
  Indicate whether the statement is true or false

Question 6

Isomorphous substitution involves the substitution of a tetrahedral sheet for an octahedral sheet.
 
  Indicate whether the statement is true or false

Question 7

The high cation adsorption capacity of vermiculite is due primarily to the substitution of silicon atoms for aluminum in the tetrahedral sheet.
 
  Indicate whether the statement is true or false

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